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About Spare Air Bottle only

Tested and approved, Spare Air is a totally self-contained (3.0 cu ft of air), refillable backup air system that's small and easy to use.

It was designed to get you to the surface in the event of an emergency; yet, it is small enough to not even know you are wearing it!

- Easy to travel with!!
- Easy to wear!
- Easy to refill!
- Easy to hand off to a fellow diver in trouble!

Warranty Information

This product has a limited warranty of 12 months.
(800) 648-3483

Spare Air Bottle only Features

  • 3.0 cubic feet of air
  • Refillable to 3000 psi off any SCUBA tank or air compressor with refill adapter (not included)
  • Easily attaches to your BC with holster and safety leash (not included)
  • Small, hands-free, nearly neutrally buoyant
  • Built-in pressure indicator.
  • Air release button.
  • Breath on demand regulator. No complicated instructions, simply put it in your mouth and breath!
  • Faster than buddy breathing and easier than an octopus

Spare Air Bottle only Specifications

Weight [with packaging]
3.55 lb
Spare Air Tank Size Chart
  Spare Air 300 Spare Air 300 Nitrox
Max Capacity 3.0 cu ft / 85 liters 3.0 cu ft / 85 liters
Length 13.4" / 34 cm 13.4 " / 34 cm
Diameter 2.25" / 5.71 cm 2.25 " / 5.71 cm
Max Pressure 3000 psi / 200 bar 3000 psi / 200 bar
Weight (full) 2.17 lbs / .985 kg 2.17 lbs / .985 kg
Surface Breaths 57 (Based on 1.6 liters per breath) 57 ( Based on 1.6 liters per breath)
Water Volume 26.62 cu in / .42 liters 26.62 cu in / .42 liters

Bottle only Customer Reviews

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by PowerReviews
Spare Air Bottle only

(based on 2 reviews)

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Reviewed by 2 customers

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About Me Advanced


  • Easy to Use
  • Lightweight


    Best Uses

    • Cave Diving
    • Night Diving
    • Open Water
    • Wreck Diving

    Comments about Spare Air Bottle only:

    I tested in Bonaire on several dives. I'M 250 lbs at 40 feet It gave me about 2.5 minute of air at 20 feet about 3.25 minutes of air. Could I do a safety stop with it if I needed to questionable. This is great to bail out from shallow depths 60ft or less. It is probably better used to catch up with your dive buddy who is more than a breath or two away and buddy breathe to the surface. This will get you up in an emergency. If your deep I would go to 15 feet and empty the tank there. it may save your life. I use with Zeagle Ranger LTD and the zip pouch accessory made for it. I travel with cheesy clear plastic travel bag because it clearly explains to the TSA what it is and what it is used for. A dial gauge is a must because the pin pops out at 2500 psi and it should be filled full 3000 psi so to give you the best chance possible. Tried in penguin tank at zoo 38F water and it function just fine.

    • Diving Type:
    • Drift Diving, Night Diving, Open Water Diving, Rescue Diving
    • Was this a gift?:
    • No

    Comment on this review

    (2 of 5 customers found this review helpful)


    Good for shallow diving.

    By Bill

    from Laguna Niquel, CA

    About Me Professional

    Verified Reviewer


    • Easy to Use
    • Lightweight


    • Small Capacity

    Best Uses

    • Open Water

    Comments about Spare Air Bottle only:

    This is better than nothing. Beware of getting a false sense of security. Having this does NOT mean you can solo dive. It is NOT good for deep diving, over 80 feet. You need proper training and a pony bottle.

    • Diving Type:
    • Drift Diving, Night Diving, Open Water Diving, Rescue Diving, Wreck Diving
    • Was this a gift?:
    • No
    • Similar:
    • 13 cubic foot pony bottle.

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    Questions & Answers Powered by TurnTo®

    Questions about this item:

    Rick S  What items come with this product?
    Marilyn S  This includes the bottle/tank and top/breathe on demand regulator with built in pressure indicator only. No leash, no bag, no refill adapter, and no dial pressure gauge (SKU: SXDPG). The package that includes the leash bag and refill adapter is SKU: SX27Y. The Nitrox version kit is SKU: SX27N.
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